CASTLEFORD  , an

urban district in the Osgoldcross parliamentary division of the West Riding of Yorkshire, England, on the river Aire near its junction with the Calder, 9 M . S.E. of Leeds, on the North-Eastern and Lancashire & Yorkshire railways . Pop . (1901) 17,386 . Large glass-bottle and earthenware-jar works, chemical works, and neighbouring collieries employ the inhabitants . Here was the Roman village or fort of Lagecium or Legeolium; and though visible remains are wanting, a number of relics have been discovered . CASTLE-GUARD, an arrangement under the feudal system, by which the duty of finding knights to guard royal castles was imposed on certain baronies, and divided among their knight's fees . The greater barons provided for the guard of their castles by exacting a similar duty from their knights . In both cases the obligation was commuted very early for a fixed money payment, which, as " castle-guard rent " lasted on to modern times . See J . H . Round, " Castle-Guard," in Archaeological Journal, vol. lix., and " Castle-ward and Coinage," in The Commune of London .

(J . H .